<!DOCTYPE html>
<html>
	<head lang="en">
		<meta charset="utf-8">
		<title>Winds Tag Ball Demo</title>
		<!-- <link rel="stylesheet" type="text/css" href="miaov_style.css" /> -->
		<style>
			body {background: #ffffff center 230px;}
			#div1 {position:relative; width:450px; height:450px; margin: 20px auto 0; }
			#div1 a {position:absolute; top:0px; left:0px; font-family: Microsoft YaHei; color: #0b85ff; font-weight:bold; text-decoration:none; padding: 3px 6px; }
			 
			#div1 .blue {color:blue;}
			#div1 .red {color:red;}
			#div1 .yellow {color:yellow;}
			 
			p { font: 16px Microsoft YaHei; text-align: center; color: #ba0c0c; }
			p a { font-size: 14px; color: #ba0c0c; }
			p a:hover { color: red; }
    </style>
	</head>
	<body>

		<script type="text/javascript" src="../js/jquery-1.11.1.min.js"></script>
		<!-- <script type="text/javascript" src="miaov.js"></script> -->
		<script>
			var radius = 180; //3D 球的半径
			var dtr = Math.PI / 180;
			var d = 600;

			var mcList = [];
			var active = false;
			var lasta = 1;
			var lastb = 1;
			var distr = true;
			var tspeed = 20; //文字移动速度
			var size = 250;

			var mouseX = 0;
			var mouseY = 0;

			var howElliptical = 1;

			var aA = null;
			var oDiv = null;

			function update() {
				var a;
				var b;

				if (active) {
					a = (-Math.min(Math.max(-mouseY, -size), size) / radius) * tspeed;
					b = (Math.min(Math.max(-mouseX, -size), size) / radius) * tspeed;
				} else {
					a = lasta * 0.98;
					b = lastb * 0.98;
				}

				lasta = a;
				lastb = b;

				if (Math.abs(a) <= 0.01 && Math.abs(b) <= 0.01) {
					return;
				}

				var c = 0;
				sineCosine(a, b, c);
				for (var j = 0; j < mcList.length; j++) {
					var rx1 = mcList[j].cx;
					var ry1 = mcList[j].cy * ca + mcList[j].cz * (-sa);
					var rz1 = mcList[j].cy * sa + mcList[j].cz * ca;

					var rx2 = rx1 * cb + rz1 * sb;
					var ry2 = ry1;
					var rz2 = rx1 * (-sb) + rz1 * cb;

					var rx3 = rx2 * cc + ry2 * (-sc);
					var ry3 = rx2 * sc + ry2 * cc;
					var rz3 = rz2;

					mcList[j].cx = rx3;
					mcList[j].cy = ry3;
					mcList[j].cz = rz3;

					per = d / (d + rz3);

					mcList[j].x = (howElliptical * rx3 * per) - (howElliptical * 2);
					mcList[j].y = ry3 * per;
					mcList[j].scale = per;
					mcList[j].alpha = per;

					mcList[j].alpha = (mcList[j].alpha - 0.6) * (10 / 6);
				}

				doPosition();
				depthSort();
			}

			function depthSort() {
				var i = 0;
				var aTmp = [];

				for (i = 0; i < aA.length; i++) {
					aTmp.push(aA[i]);
				}

				aTmp.sort(
					function(vItem1, vItem2) {
						if (vItem1.cz > vItem2.cz) {
							return -1;
						} else if (vItem1.cz < vItem2.cz) {
							return 1;
						} else {
							return 0;
						}
					}
				);

				for (i = 0; i < aTmp.length; i++) {
					aTmp[i].style.zIndex = i;
				}
			}

			function positionAll() {
				var phi = 0;
				var theta = 0;
				var max = mcList.length;
				var i = 0;

				var aTmp = [];
				var oFragment = document.createDocumentFragment();

				//�������
				for (i = 0; i < aA.length; i++) {
					aTmp.push(aA[i]);
				}

				aTmp.sort(
					function() {
						return Math.random() < 0.5 ? 1 : -1;
					}
				);

				for (i = 0; i < aTmp.length; i++) {
					oFragment.appendChild(aTmp[i]);
				}

				oDiv.appendChild(oFragment);

				for (var i = 1; i < max + 1; i++) {
					if (distr) {
						phi = Math.acos(-1 + (2 * i - 1) / max);
						theta = Math.sqrt(max * Math.PI) * phi;
					} else {
						phi = Math.random() * (Math.PI);
						theta = Math.random() * (2 * Math.PI);
					}
					//���任
					mcList[i - 1].cx = radius * Math.cos(theta) * Math.sin(phi);
					mcList[i - 1].cy = radius * Math.sin(theta) * Math.sin(phi);
					mcList[i - 1].cz = radius * Math.cos(phi);

					aA[i - 1].style.left = mcList[i - 1].cx + oDiv.offsetWidth / 2 - mcList[i - 1].offsetWidth / 2 + 'px';
					aA[i - 1].style.top = mcList[i - 1].cy + oDiv.offsetHeight / 2 - mcList[i - 1].offsetHeight / 2 + 'px';
				}
			}

			function doPosition() {
				var l = oDiv.offsetWidth / 2;
				var t = oDiv.offsetHeight / 2;
				for (var i = 0; i < mcList.length; i++) {
					aA[i].style.left = mcList[i].cx + l - mcList[i].offsetWidth / 2 + 'px';
					aA[i].style.top = mcList[i].cy + t - mcList[i].offsetHeight / 2 + 'px';
					//aA[i].style.fontSize=Math.ceil(12*mcList[i].scale/2)+8+'px';
					aA[i].style.filter = "alpha(opacity=" + 100 * mcList[i].alpha + ")";
					aA[i].style.opacity = mcList[i].alpha;
				}
			}

			function sineCosine(a, b, c) {
				sa = Math.sin(a * dtr);
				ca = Math.cos(a * dtr);
				sb = Math.sin(b * dtr);
				cb = Math.cos(b * dtr);
				sc = Math.sin(c * dtr);
				cc = Math.cos(c * dtr);
			}

			$(document).ready(function() {
				var i = 0;
				var oTag = null;
				$.getJSON("../js/test.json", function(data) {
					var items = [];
					$.each(data, function(key, val) {
						console.log(key, val, "-------")
						items.push("<a href=#  style=font-size:" + val.px + "px>" + val.name + "</a>");
					});
					$("<div/>", {
						"id": "div1",
						style: "border:solid 2px black",
						ALIGN: "center",
						html: items.join("")
					}).appendTo("body");
					//console.log($('div'));

					oDiv = document.getElementById('div1');
					aA = oDiv.getElementsByTagName('a');

					for (i = 0; i < aA.length; i++) {
						oTag = {};
						oTag.offsetWidth = aA[i].offsetWidth;
						oTag.offsetHeight = aA[i].offsetHeight;
						mcList.push(oTag);
					}

					sineCosine(0, 0, 0);

					positionAll();

					oDiv.onmouseover = function() {
						active = true;
					};

					oDiv.onmouseout = function() {
						active = false;
					};

					oDiv.onmousemove = function(ev) {
						var oEvent = window.event || ev;

						mouseX = oEvent.clientX - (oDiv.offsetLeft + oDiv.offsetWidth / 2);
						mouseY = oEvent.clientY - (oDiv.offsetTop + oDiv.offsetHeight / 2);

						mouseX /= 5;
						mouseY /= 5;
					};

					setInterval(update, 30);
				});
			});
		</script>
	</body>
